VTI Instruments is pleased to announce the introduction of its EMX-4250, a high density, "smart" PXI Express multi-channel dynamic signal analyzer (DSA) capable of sustaining 24-bit simultaneous sampling across all channels, up to 204.8 k Samples/Second. This makes it ideal for DSA applications such as: noise vibration and harshness (NVH) analysis, machine condition monitoring, rotational analysis, acoustic test, modal test and general purpose high speed digitization and signal analysis.

The EMX-4250 has been designed to address challenging precision data acquisition applications with aggressive anti-aliasing filtering integrated into the front end that helps eliminate unwanted signals and reduce measurement errors. The instrument delivers a spurious free dynamic range (SFDR) to -105 dB, a key measure of its superior measurement fidelity and an essential design element that ensures that the strength ratio of the fundamental signal of interest is highly accurate. This measurement is critical for frequency domain analysis where distortion typically increases with frequency.

The smart signal conditioning integrated into the EMX-4250 allows it to deliver exceptional measurement flexibility with multiple options that support a wide range of transducers and signal types, including IEPE and charge. It has the flexibility to autorange ±100 mV to ±10 V input ranges in order to maximize signal resolution by automatically selecting the correct range for the input signal level.

The EMX-4250 meets cross channel phase matching of <0.01°, allowing it to provide uncompromised phase response required for accurate single and cross channel measurements that are common in most DSA applications.

Matlab® and Simulink® design tools simplify implementation, maximize reusability, and provide access to hundreds of standard filters and analysis algorithms. The EMX-4250 is supported by comprehensive, turnkey modal and DSA software packages including X-Modal and Test for I-DEAS. The dynamic signal analyzer application programming interface allows the EMX-4250 to be flexible and best suited for its application and specific development requirements.